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0.51ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG685523343

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685523343

Diamond specifications and retailer prices

From HK$730 HKD
$93 USD
As of October 29, 2026
Save HK$5,946 HKD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$6,676 HKD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 0.51ct lab-grown round diamond

This 0.51ct lab-grown round sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685523343 or 685523343. Listed at 15 retailers as of October 29, 2026, with prices from HK$730 to HK$6,676, a HK$5,946 spread on the same certified stone. Reve Diamonds lists it at HK$6,676. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685523343
Dimensions5.12 × 5.16 × 3.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.12 mm5.16 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685523343
Side View
Table 59.0%Crown 35.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: HK$3,196 HKD|Low: HK$690 HKD|High: HK$6,676 HKD|Avg: HK$2,122 HKD|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Reve Diamonds
October 31, 2026
Retailer 6HK$730 HKD
Retailer 8HK$761 HKD
Retailer 12HK$792 HKD
Retailer 7HK$902 HKD
Retailer 4HK$957 HKD
Retailer 2HK$1,295 HKD
Retailer 9HK$1,552 HKD
Retailer 11HK$1,812 HKD
Retailer 14HK$1,878 HKD
Retailer 5HK$2,087 HKD
Retailer 3HK$2,722 HKD
Retailer 10HK$2,730 HKD
Retailer 1HK$3,196 HKD
Retailer 13HK$6,656 HKD
Reve DiamondsHK$6,676 HKD

43 data points across 15 retailers

15 retailersHK$730 HKD to HK$6,676 HKD

A
Cheapest Retailer
-
HK$730 HKD
$93 USD
A
Retailer 2
-
HK$761 HKD
$97 USD
View
Final sale: no returns
A
Retailer 3
-
HK$792 HKD
$101 USD
View
A
Retailer 4
-
HK$902 HKD
$115 USD
View
A
Retailer 5
-
HK$957 HKD
$122 USD
View
Retailer 6
-
HK$1,295 HKD
$165 USD
View
Price last confirmed 10 days ago
A
Retailer 7
-
HK$1,552 HKD
£156 GBP
View
A
Retailer 8
-
HK$1,812 HKD
$231 USD
View
B+
Retailer 9
-
HK$1,878 HKD
€228 EUR
View
B+
Retailer 10
-
HK$2,087 HKD
$266 USD
View
B+
Retailer 11
-
HK$2,722 HKD
$347 USD
View
B+
Retailer 12
-
HK$2,730 HKD
$348 USD
View
B+
Retailer 13
-
HK$3,196 HKD
$407 USD
View
B
Retailer 14
-
HK$6,656 HKD
£668 GBP
View
Most Expensive
B
Reve Diamonds
CC77D7D47 · Oct 30
HK$6,676 HKD
$851 USD
View
14 more retailers have this diamond
Prices start from HK$730 HKDSave up to HK$5,946 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.51ct Round
HK$730 HKD